Home Postcode finder WA North Kununoppin North Kununoppin postcode WA North Kununoppin is a locality in Western Australia covered by postcode 6489. Postcode 6489 State or territory Western Australia (WA) Region Wa Subs 1 G Flds Add a free North Kununoppin business listing Be the first listing in North Kununoppin Common questionsWhat is the postcode for North Kununoppin?North Kununoppin, WA has the postcode 6489.What state is North Kununoppin in?North Kununoppin is in Western Australia (WA).Does postcode 6489 cover more than one suburb?Yes. Postcode 6489 covers 3 localities, so the postcode alone does not identify North Kununoppin. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.